Directory mirroring

melkoraton · 10-28-2010, 07:24 AM

We have production servers with a php application worling with apahce and mysql. The application also saves files to the filesystem. We aré looking for a way to have a sync mirrored filesystem, or only the folders that the php app uses so that if the main server Fails we can redirect the apps to this mirrored filesystem. Is there a way to have this mirrored filesystem synqed at all times?
Thx

prayag_pjs · 10-28-2010, 07:30 AM

Try rsync

http://www.howtoforge.com/mirroring_with_rsync

http://www.howtogeek.com/wiki/Tweaki...ual_Web_Server

http://www.arraystudio.com/as-worksh...-computer.html

TobiSGD · 10-28-2010, 08:26 AM

I think the right tool for you is gamin, maybe in connection with rsync.

vikas027 · 10-28-2010, 09:22 AM

See this link. This is the best one IMHO. Even I learned from this link only.

http://www.linuxquestions.org/linux/...etween_servers

melkoraton · 10-28-2010, 09:49 AM

ya but rsync consumes a lot of CPU if you have it running all the time, doesn't it?

vikas027 · 10-28-2010, 10:02 AM

NO it does not.
RYNC only copies new or modified files/folder.

Also, you need not keep running it all the time. You can schedule it in crontab on hourly or minute basis.

Other way to have a exact copy of the filesystem is to use RAID 1.